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2 years ago

Adult male heights have a normal probability distribution with a mean of 70 inches and a standard deviation of 4 inches.

Mathematics

1 answer:

nexus9112 [7]2 years ago

7 0

Answer: 0.84134

Step-by-step explanation:

We need to find the z-score for the given information first since this will help us find the probability. The formula for this is

Z score = $\frac{x - \mu}{\sigma}$

We have

$x =$ 66 inches (the raw score)

$\mu =$ 70 inches (the population mean)

$\sigma$ = 4 inches (the standard deviation)

This gives

Z score = $\frac{x - \mu}{\sigma}$ = $\frac{66-70}{4} = -1$

If you use a calculator, or a Z-score table then P(x > Z) is just P(Z > -1) which gives a probability of 0.84134.

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Answer:

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Step-by-step explanation:

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2 years ago

The length of a rectangle is 3 inches more than its width. the area of the rectangle is 40 square inches. what is the length, in

IceJOKER [234]

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3 years ago

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ale4655 [162]

Answer:

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Step-by-step explanation:

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Hope this helps!

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